1. a person who avoids work or effort; someone who is lazy or shirks responsibilities
Usage: informal

Examples

• The teacher called him a slacker because he never did his homework.
• Don’t be such a slacker—help us clean up the garage.
• She was tired of being seen as a slacker at work.
• The group project suffered because one member was a complete slacker.
• He reformed his slacker ways and became a dedicated student.
• The boss fired the slacker who spent all day browsing the internet.